Anti spam tool: new [intelligent] captcha question

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peopleopinion
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Thu Nov 28, 2013 5:12 pm
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Anti spam tool: new [intelligent] captcha question

Post by peopleopinion » Thu Nov 28, 2013 5:12 pm

What about to add a new feature that [if activated by admin] can be used together with captcha and asks to the user that is going to subscribe (or post etc.), to respond to an [intelligent] question randomly chosen from a big customizable list like:

Security question:
Q) Who is the father's father
A) Grandfather

Q) Which are the first 3 letters of this web site domain?
A) php

Q) Who discovered America?
A) Cristoforo Colombo

Q) What color was the blue ;) horse of Napoleon?
A) White

Q) 10^3+5x2+3
A) 2013

Q) Insert this text into the field: 75)86/()121='
A) 75)86/()121='

Etc.

I have this idea because I'm noticing that captcha is no more effective and spammers can overcome it every day more often and for an admin the war against spam bots is going to be very problematic and very time consuming: in a single day I'm having about 1000 new spam posts and a lots of users that are registering an account in the forum but when I check it I discover that it is a spammer, because of similar data inserted in profile or the email or IP is into some spam database.
So I hope that this idea could help me and others to prevent or slow down this phenomena.

Thanks for reading captcha question

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Re: Anti spam tool: new [intelligent] captcha question

Post by Brf » Thu Nov 28, 2013 5:19 pm

You need to have a question that a human can answer, but a bot cannot.
These examples are not those.

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Re: Anti spam tool: new [intelligent] captcha question

Post by peopleopinion » Thu Nov 28, 2013 5:36 pm

Brf wrote:You need to have a question that a human can answer, but a bot cannot.
These examples are not those.
Well sometimes it is worse than this: I tried in another test web site the new colored captcha inside phpbb 3.0.12 and... I cannot solve it but bots do... I don't understand how it is possible... :oops:
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Re: Anti spam tool: new [intelligent] captcha question

Post by Brf » Thu Nov 28, 2013 5:51 pm

The real point is that phpBB already has a Q&A captcha. How is this topic a new idea?

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Re: Anti spam tool: new [intelligent] captcha question

Post by peopleopinion » Thu Nov 28, 2013 6:01 pm

Brf wrote:How is this topic a new idea?
To use them, Image and Q&A captcha, together... I mean simultaneously:
Please explicate why you voted negative or positive, so it will be possible to better understand each one's point of view.
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Re: Anti spam tool: new [intelligent] captcha question

Post by Brf » Thu Nov 28, 2013 6:04 pm

That can already be done too, but as you said, the Bots can already solve the image captchas.

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Re: Anti spam tool: new [intelligent] captcha question

Post by Marc » Thu Nov 28, 2013 6:19 pm

So you think having a list of already known questions and answers + an image captcha that can be solved is more secure than either of them? That's like saying 1 * 1 is bigger than 1.

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Re: Anti spam tool: new [intelligent] captcha question

Post by peopleopinion » Thu Nov 28, 2013 6:58 pm

Marc wrote:So you think having a list of already known questions and answers + an image captcha that can be solved is more secure than either of them? That's like saying 1 * 1 is bigger than 1.
:(

Ok... copy that...

If this doesn't work I have to think to another solution... 8-)...

What about animated captchas? (gif images, flash animations?)
Please explicate why you voted negative or positive, so it will be possible to better understand each one's point of view.
Please visit and vote my website and express freely your opinion on it (phpbb ver.: 3.0.12):
http://peopleopinion.altervista.org
Thanks. Best Regards, peopleopinion.

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Re: Anti spam tool: new [intelligent] captcha question

Post by peopleopinion » Mon Dec 02, 2013 8:51 pm

Anyway I didn't get any response about the question on the randomness of the choice of the question to show to user.
In fact I noticed that in 3.0.11 I set 2 questions of example but when I try to use them going to registration page or for posting as guest I receive every time the same question: the system shows only the first I set but not the second.
I think that randomizing strong questions is a bit more difficult for bots to pass the checkpoint.
Isn't it?
I can't see it randomized in phpbb. What am I doing wrong?
Please explicate why you voted negative or positive, so it will be possible to better understand each one's point of view.
Please visit and vote my website and express freely your opinion on it (phpbb ver.: 3.0.12):
http://peopleopinion.altervista.org
Thanks. Best Regards, peopleopinion.

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Re: Anti spam tool: new [intelligent] captcha question

Post by KevC » Mon Dec 02, 2013 9:42 pm

Q&A randomly chooses from the list of questions you've created.

The problem with having multiple questions is that it does not record the responses so if you have a weak question that's being beaten you don't know which one it is.
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Re: Anti spam tool: new [intelligent] captcha question

Post by peopleopinion » Tue Dec 03, 2013 4:07 pm

Kevin Clark wrote:Q&A randomly chooses from the list of questions you've created.
This is a good news. But maybe I have set something wrong because the system shows me only one Q&A capchas of the two I inserted. I don't understand what I made wrong... I have to study more...
Kevin Clark wrote:The problem with having multiple questions is that it does not record the responses so if you have a weak question that's being beaten you don't know which one it is.
Yes this is a huge problem that needs a solution, asap.
Please explicate why you voted negative or positive, so it will be possible to better understand each one's point of view.
Please visit and vote my website and express freely your opinion on it (phpbb ver.: 3.0.12):
http://peopleopinion.altervista.org
Thanks. Best Regards, peopleopinion.

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